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Home >> Infiniti >> 2016 >> Q50 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lighting System (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Daytime Running Light Circuit >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  1. CHECK DAYTIME RUNNING LIGHT RELAY FUSES

    1. Turn ignition switch OFF.
    2. Check that the following fuses are not blown (open).
    Unit Fuse No. Capacity
    Daytime running light relay #58 10 A
    #72
    #73

    Is the fuse blown (open)?

    YES 

    Replace the blown fuse after repairing the affected circuit if a fuse is blown (open).

    NO 

    GO TO STEP 2. 

  2. CHECK DAYTIME RUNNING LIGHT RELAY POWER SUPPLY

    1. Remove daytime running light relay.
    2. Check voltage between daytime running light relay harness connector and ground.
      + - Voltage
      (Approx.)
      Daytime running light relay
      Connector Terminal
      E104 2 Ground Battery voltage
      5
      7

    Is the inspection result normal?

    YES 

    GO TO STEP 3. 

    NO 

    Repair or replace harness.

  3. CHECK DAYTIME RUNNING LIGHT RELAY

    Check daytime running light relay. Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    GO TO STEP 4. 

    NO 

    Replace daytime running light relay.

  4. CHECK DAYTIME RUNNING LIGHT RELAY CONTROL SIGNAL OUTPUT

    G-20 With CONSULT

    1. Install daytime running light relay.
    2. Turn ignition switch ON.
    3. Select "HEAD LAMP" of "BCM" using CONSULT.
    4. Select "DAYTIME RUNNING LIGHT" in "Active Test" mode.
    5. With operating the test item, check voltage between IPDM E/R harness connector and ground.
      + - Test item Voltage
      IPDM E/R
      Connector Terminal
      E126 85 Ground DAYTIME RUNNING LIGHT On 0 - 1 V
      Off 9 - 16 V

    Is the inspection result normal?

    YES 

    GO TO STEP 7. 

    NO-1 

    Fixed at 0 - 1 V: GO TO STEP 6. 

    NO-2 

    Fixed at 9 - 16 V: GO TO STEP 5. 

  5. CHECK DAYTIME RUNNING LIGHT REQUEST SIGNAL

    G-20 With CONSULT

    1. Select "DTRL REQ" in "Data Monitor" mode of "IPDM E/R" using CONSULT.
    2. With operating the daytime running light ON condition, check the monitor status.
    Monitor item Condition Monitor status
    DTRL REQ Daytime running light ON condition On
    OFF condition Off

    Is the inspection result normal?

    YES 

    Replace IPDM E/R. Refer to REMOVAL AND INSTALLATION .

    NO 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

  6. CHECK DAYTIME RUNNING LIGHT RELAY CONTROL SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Remove daytime running light relay.
    3. Disconnect IPDM E/R harness connector.
    4. Check continuity between IPDM E/R harness connector and daytime running light relay harness connector.
      IPDM E/R Daytime running light relay Continuity
      Connector Terminal Connector Terminal
      E126 85 E104 1 Existed

    Is the inspection result normal?

    YES 

    Replace IPDM E/R. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  7. CHECK DAYTIME RUNNING LIGHT POWER SUPPLY CIRCUIT

    1. Turn ignition switch OFF.
    2. Remove daytime running light relay.
    3. Disconnect front combination lamp connector.
    4. Check continuity between daytime running light relay harness connector and front combination lamp harness connector.
      Daytime running light relay Front combination lamp Continuity
      Connector Terminal Connector Terminal
      RH E104 6 E42 1 Existed
      LH 3 E41

    Is the inspection result normal?

    YES 

    GO TO STEP 8  .

    NO 

    Repair or replace harness.

  8. CHECK DAYTIME RUNNING LIGHT GROUND CIRCUIT

    Check continuity between front combination lamp harness connector and ground.

    Front combination lamp - Continuity
    Connector Terminal
    RH E42 4 Ground Existed
    LH E41

    Is the inspection result normal?

    YES 

    Replace front combination lamp. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.